On Tue, May 14, 2024 at 06:54:55PM GMT, Gautam Menghani wrote:
> Remove extended_cede_processor() and its helpers as
> extended_cede_processor() has no callers since
> commit 48f6e7f6d948("powerpc/pseries: remove cede offline state for CPUs")
>
> Signed-off-by: Gautam Menghani
> ---
> v1 -> v2:
Currently patch_instruction() bases the write length on the value being
written. If the value looks like a prefixed instruction it writes 8 bytes,
otherwise it writes 4 bytes. This makes it potentially buggy to use for
writing arbitrary data, as if you want to write 4 bytes but it decides to
write
Extend the code patching selftests with some basic coverage of the new
data patching variants too.
Signed-off-by: Benjamin Gray
---
v4: * Change store to a check
* Account for doubleword alignment
v3: * New in v3
---
arch/powerpc/lib/test-code-patching.c | 41 +++
patch_instruction() is designed for patching instructions in otherwise
readonly memory. Other consumers also sometimes need to patch readonly
memory, so have abused patch_instruction() for arbitrary data patches.
This is a problem on ppc64 as patch_instruction() decides on the patch
width using
The new data patching still needs to be aligned within a
cacheline too for the flushes to work correctly. To simplify
this requirement, we just say data patches must be aligned.
Detect when data patching is not aligned, returning an invalid
argument error.
Signed-off-by: Benjamin Gray
---
v3:
These changes are for patch_instruction() uses on data. Unlike ppc64
these should not be incorrect as-is, but using the patch_uint() alias
better reflects what kind of data being patched and allows for
benchmarking the effect of different patch_* implementations (e.g.,
skipping instruction
This use of patch_instruction() is working on 32 bit data, and can fail
if the data looks like a prefixed instruction and the extra write
crosses a page boundary. Use patch_u32() to fix the write size.
Fixes: 8734b41b3efe ("powerpc/module_64: Fix livepatching for RO modules")
Link:
Hi all,
On Fri, 3 May 2024 13:32:13 +1000 Stephen Rothwell
wrote:
>
> Many years ago, linuxppc-dev was moved from ozlabs.org to
> lists.ozlabs.org. These days most of the mail sent to linuxppc-dev
> @ozlabs.org is spam (causing added burden to the list owner i.e. me),
> so I intend to drop
On Tue, May 14, 2024 at 10:26:49PM +0200, Oscar Salvador wrote:
> On Fri, May 10, 2024 at 03:29:48PM -0400, Peter Xu wrote:
> > IMHO we shouldn't mention that detail, but only state the effect which is
> > to not report the event to syslog.
> >
> > There's no hard rule that a pte marker can't
On Fri, May 10, 2024 at 03:29:48PM -0400, Peter Xu wrote:
> IMHO we shouldn't mention that detail, but only state the effect which is
> to not report the event to syslog.
>
> There's no hard rule that a pte marker can't reflect a real page poison in
> the future even MCE. Actually I still
Defined CRYPTO_CURVE25519_PPC64 to support X25519 for ppc64le.
Added new module curve25519-ppc64le for X25519.
Signed-off-by: Danny Tsen
---
arch/powerpc/crypto/Kconfig | 11 +++
arch/powerpc/crypto/Makefile | 2 ++
2 files changed, 13 insertions(+)
diff --git
X25519 core functions to handle scalar multiplication for ppc64le.
Signed-off-by: Danny Tsen
---
arch/powerpc/crypto/curve25519-ppc64le-core.c | 299 ++
1 file changed, 299 insertions(+)
create mode 100644 arch/powerpc/crypto/curve25519-ppc64le-core.c
diff --git
This patch series provide X25519 support for ppc64le with a new module
curve25519-ppc64le.
The implementation is based on CRYPTOGAMs perl output from x25519-ppc64.pl.
Modified and added 3 supporting functions.
This patch has passed the selftest by running modprobe
curve25519-ppc64le.
Danny Tsen
Use the perl output of x25519-ppc64.pl from CRYPTOGAMs and added three
supporting functions, x25519_fe51_sqr_times, x25519_fe51_frombytes
and x25519_fe51_tobytes.
Signed-off-by: Danny Tsen
---
arch/powerpc/crypto/curve25519-ppc64le_asm.S | 648 +++
1 file changed, 648
There is an issue with the hotplug operation when it's done on the
bridge/switch slot. The bridge-port and devices behind the bridge, which
become offline by hot-unplug operation, don't get hot-plugged/enabled by
doing hot-plug operation on that slot. Only the first port of the bridge
gets enabled
Description of the problem: The hotplug driver for powerpc
(pci/hotplug/pnv_php.c) gives kernel crash when we try to
hot-unplug/disable the PCIe switch/bridge from the PHB.
Root Cause of Crash: The crash is due to the reason that, though the msi
data structure has been released during
The fix of Powerpc hotplug driver (drivers/pci/hotplug/pnv_php.c)
addresses below two issues.
1. Kernel Crash during hot unplug of bridge/switch slot.
2. DPC-Support Enablement - Previously, when we do a hot-unplug
operation on a bridge slot, all the ports and devices behind the
bridge-ports
allnoconfig gcc
arc allyesconfig gcc
arc defconfig gcc
arc randconfig-001-20240514 gcc
arc randconfig-002-20240514 gcc
arc
Remove extended_cede_processor() and its helpers as
extended_cede_processor() has no callers since
commit 48f6e7f6d948("powerpc/pseries: remove cede offline state for CPUs")
Signed-off-by: Gautam Menghani
---
v1 -> v2:
1. Remove helpers of extended_cede_processor()
Thanks Sourabh for review. I have incorporated your comments and will be
sending my patch soon.
Best Regards,
Krishna
On 5/13/24 15:15, Sourabh Jain wrote:
Hello Krishna,
Is "arch" in commit title really required?
On 09/05/24 17:35, Krishna Kumar wrote:
There is an issue with the hotplug
Thanks Andy for review. I have incorporated your comments and will be
sending the patch soon.
On 5/11/24 11:12, Andy Shevchenko wrote:
Thu, May 09, 2024 at 05:35:54PM +0530, Krishna Kumar kirjoitti:
There is an issue with the hotplug operation when it's done on the
bridge/switch slot. The
Add pcie_print_tlp_log() helper to print TLP Header and Prefix Log.
Print End-End Prefixes only if they are non-zero.
Consolidate the few places which currently print TLP using custom
formatting.
The first attempt used pr_cont() instead of building a string first but
it turns out pr_cont() is
pcie_read_tlp_log() handles only 4 Header Log DWORDs but TLP Prefix Log
(PCIe r6.1 secs 7.8.4.12 & 7.9.14.13) may also be present.
Generalize pcie_read_tlp_log() and struct pcie_tlp_log to handle also
TLP Prefix Log. The relevant registers are formatted identically in AER
and DPC Capability, but
eetlp_prefix_path in the struct pci_dev tells if End-End TLP Prefixes
are supported by the path or not, the value is only calculated if
CONFIG_PCI_PASID is set.
The Max End-End TLP Prefixes field in the Device Capabilities Register
2 also tells how many (1-4) End-End TLP Prefixes are supported
Loop variable i counting from 0 upwards does not need to be signed so
make it unsigned int.
Signed-off-by: Ilpo Järvinen
---
drivers/pci/pcie/tlp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/pcie/tlp.c b/drivers/pci/pcie/tlp.c
index
pcie_read_tlp_log()'s prototype and function signature diverged due to
changes made while applying.
Make the parameters of pcie_read_tlp_log() named identically.
Signed-off-by: Ilpo Järvinen
---
drivers/pci/pcie/tlp.c | 11 +--
1 file changed, 5 insertions(+), 6 deletions(-)
diff
On Tue, May 14, 2024 at 04:20:04PM GMT, Naveen N Rao wrote:
> On Tue, May 14, 2024 at 03:35:03PM GMT, Gautam Menghani wrote:
> > Remove extended_cede_processor() definition as it has no callers since
> > commit 48f6e7f6d948("powerpc/pseries: remove cede offline state for CPUs")
>
>
TLP Log is PCIe feature and is processed only by AER and DPC.
Configwise, DPC depends AER being enabled. In lack of better place, the
TLP Log handling code was initially placed into pci.c but it can be
easily placed in a separate file.
Move TLP Log handling code to own file under pcie/
pcie_read_tlp_log() was exposed by the commit 0a5a46a6a61b ("PCI/AER:
Generalize TLP Header Log reading") but this is now considered a
mistake. No drivers outside of PCI subsystem should build their own
diagnostic logging but should rely on PCI core doing it for them.
There's currently one driver
This series has the remaining patches of the AER & DPC TLP Log handling
consolidation and now includes a few minor improvements to the earlier
accepted TLP Logging code.
v5:
- Fix build with AER=y and DPC=n
- Match kerneldoc and function parameter name
v4:
- Added patches:
- Remove
On Tue, May 14, 2024 at 03:35:03PM GMT, Gautam Menghani wrote:
> Remove extended_cede_processor() definition as it has no callers since
> commit 48f6e7f6d948("powerpc/pseries: remove cede offline state for CPUs")
extended_cede_processor() was added in commit 69ddb57cbea0
("powerpc/pseries: Add
On Tue, May 14, 2024 at 04:39:30AM GMT, Christophe Leroy wrote:
>
>
> Le 14/05/2024 à 04:59, Benjamin Gray a écrit :
> > On Tue, 2024-04-23 at 15:09 +0530, Naveen N Rao wrote:
> >> On Mon, Mar 25, 2024 at 04:53:00PM +1100, Benjamin Gray wrote:
> >>> This use of patch_instruction() is working on
Remove extended_cede_processor() definition as it has no callers since
commit 48f6e7f6d948("powerpc/pseries: remove cede offline state for CPUs")
Signed-off-by: Gautam Menghani
---
arch/powerpc/include/asm/plpar_wrappers.h | 18 --
1 file changed, 18 deletions(-)
diff --git
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